His favorite astronaut, his most beloved fictional space explorer, and the discoveries that would have changed the plot of 'The Martian.'
Oxygen-breathing critters might be more plausible than we thought.
The news isn't great, but it's not a showstopper either.
Shower your friends with meteor facts.
We think you can, Opportunity.
Don't you want to meet them?
Heat and drills will help us probe for alien microbes
Seeking a distant pale blue dot
Short answer: It depends who you ask
It's been 50 years since we got the first images of Mars. Now we're about to get the first images of Pluto.
The greatest hits of Earth's unmanned spacecraft
Who knows what might be lurking on this weird, tiny space rock
This year's missions to the outer solar system are set to shake up the planetary family tree
It's time to return to our hellish neighbor.
A curved line marked the planet's surface for four days
It's called a conjunction, and it sure is pretty
More than a light Venusian breeze.
The upper atmosphere of Venus is surprisingly similar Earth.
Finally, a good use for climate change
Pluto is just the beginning
Must-see destinations out beyond Mars
Time for a new plan.
We're under a time crunch.